mips: octeon: Add Octeon III NIC23 board support

This patch adds the basic support for the PCIe target board equipped
with the Octeon III CN2350 SoC.

Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/arch/mips/mach-octeon/Kconfig b/arch/mips/mach-octeon/Kconfig
index d69408c..624039d 100644
--- a/arch/mips/mach-octeon/Kconfig
+++ b/arch/mips/mach-octeon/Kconfig
@@ -41,6 +41,12 @@
 	help
 	 Choose this for the Octeon EBB7304 board
 
+config TARGET_OCTEON_NIC23
+	bool "Marvell Octeon NIC23"
+	select OCTEON_CN73XX
+	help
+	 Choose this for the Octeon NIC23 board
+
 endchoice
 
 config SYS_DCACHE_SIZE
@@ -60,5 +66,6 @@
 	default y
 
 source "board/Marvell/octeon_ebb7304/Kconfig"
+source "board/Marvell/octeon_nic23/Kconfig"
 
 endmenu